Low
2981 V on Worcester Bosch Greenstar 8000 F GR8700iF 35 C

Your boiler has temporarily locked itself as a safety precaution, but you can easily unlock the controls using the display buttons.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

What the manual says

Manufacturer manual

Locking fault: To unlock Hold up and down arrow keys pressed simultaneously for 3 s.

From this model's manual
Verified against the Worcester Bosch/Worcester Bosch Wb 47848 installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

DIY fix possible

Locate the display panel on the front of your boiler.Press and hold both the Up and Down arrow keys simultaneously for 3 seconds.Check if the boiler unlocks and returns to normal operation.

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All 94 fault codes on the Greenstar 8000 F GR8700iF 35 C

Seeing a different code? Every code this model can display, in one place.

224 V227 V228 V229 B232 B233 V234 V235 V237 V238 V242 V244 V245 V249 V250 V251 V252 V253 V254 V257 V258 V259 V262 V263 V265 B268 O269 V273 B281 B283 O284 O305 O306 V357 O358 O360 V362 V363 V604 V815 W10101010 O1013101710181019102110231025103710651068107010711072107510762085290829102914291529162920292329242924 V2925 V2926 V2927 V2928 V2931 V2940 V2946 V2948 B2949 B2950 B2951 V2952 V2955 B2956 O2957 V2961 V2962 V2963 B2965 B2966 B2968 O2969 –2970 B2971 B2972 V2980 V

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